Metrohm 726 User manual

CH-9101 Herisau/Switzerland
Phone [phone]
Fax [phone]
CompuServe 100031,3703
http://www.metrohm.com
726 Titroprocessor726 Titroprocessor
A Short Introduction
8.726.1023
96.12 dm

Preface
This short introduction to the 726 Titroprocessor is meant to facilitate your
getting familiar with this complex but powerful instrument.
Read these instructions carefully and work through the included tutorial. It
will lead you to all the dialog pages and show you some of the most inter-
esting features of the 726 Titroprocessor.
Markings used in this manual
<QUIT> Physical hardkey on the keyboard
[File] Softkey as shown on the screen, referring to
the hardkeys <F1>..<F9>
Display Text Display text as shown on the screen
[one | another]Selection of optional entries
Important note
HELP Pressing the <HELP> key on the keyboard
will always display a help page that will show in-
formation on the current dialog page.
When editing any parameters, pressing the
[Help on entry] softkey or the <HELP> key will
give you information on the parameter you are
editing, including the entry range and an exam-
ple.

Table of Contents
Page
1. Overview_______________________________________________ 1
1.1 Front View............................................................................................ 1
1.2 Rear View............................................................................................. 2
1.3 Where to Connect the Peripherals ...................................................... 2
1.4 Measuring Interface............................................................................. 3
1.5 The Keyboard...................................................................................... 4
2. Installation _____________________________________________ 7
2.1 Connections ........................................................................................ 7
2.2 Safety Considerations ......................................................................... 9
3. Concepts______________________________________________ 10
3.1 Determinations and Titrations ........................................................... 10
3.2 Data Storages and Statistics............................................................. 11
4. How to Navigate________________________________________ 12
4.1 Dialog Overview................................................................................. 12
4.2 The Softkeys...................................................................................... 12
4.3 Field Cursor....................................................................................... 13
5. How to Edit____________________________________________ 14
5.1 Navigation in the Edit Mode .............................................................. 14
6. Configuration __________________________________________ 15
6.1 Basic Configuration........................................................................... 15
6.2 Sample Changer Configuration......................................................... 17
7. Sample Data and Sample Silo_____________________________ 18
7.1 How to Enter Sample Data................................................................ 18
7.2 The Sample Silo ................................................................................ 18
8. Devices and Manual Operation____________________________ 20
8.1 Overview............................................................................................ 20
8.2 Dosing Devices ................................................................................. 21
8.3 Sensors.............................................................................................. 22
8.4 Sample Changer ............................................................................... 24
9. Method Editor__________________________________________ 25
9.1 Titration and Measuring Modes ........................................................ 27
9.2 Calculations....................................................................................... 32
9.3 Sample Changer Commands ........................................................... 34
9.4 Auxiliary Functions............................................................................. 34
9.5 Sequences ........................................................................................ 34
10. Results, Curves, Recalculation __________________________ 36
10.1 Result Key ....................................................................................... 36
10.2 Result Pages ................................................................................... 37
10.3 Single Curves .................................................................................. 39
10.4 Overlaying Curves ........................................................................... 40
11. File Manager__________________________________________ 41
11.1 The File List ..................................................................................... 41
11.2 File Operations ................................................................................ 42
11.3 File Backup...................................................................................... 43

12. GLP Functions ________________________________________ 44
12.1 Servicing Intervals ............................................................................44
12.2 Sensor Test ......................................................................................44
12.3 System Validation.............................................................................47
12.4 Preparing a Validation......................................................................48
12.5 The Limits and their Meanings.........................................................49
13. Access Control Configuration ___________________________ 51
14. Technical Specifications ________________________________ 52
14.1 Brief Characterization.......................................................................52
14.2 EC Declaration of Conformity ..........................................................56
14.3 Certificate of Conformity and System Validation .............................57
15. Accessories __________________________________________ 58
15.1 Titroprocessors ................................................................................58
15.2 Options.............................................................................................59

11.. OverviewOverview
726 Titroprocessor, Short Introduction 11
1 Overview
The 726 Titroprocessor is available in four versions.
Versions with 1 measurement group:
2.726.0010 With complete accessories, without built-in printer, but with parallel interface
for an external printer
2.726.0020 As 2.726.0010, but with integrated, space-saving thermal printer (DIN A4),
without additional parallel interface for printer
Versions with 2 measurement groups:
2.726.0110 With complete accessories, without built-in printer, but with parallel interface
for an external printer
2.726.0120 As 2.726.0110, but with integrated, space-saving thermal printer (DIN A4),
without additional parallel interface for printer
1.1 Front View
The 2.726.0010 Model of the 726 Titroprocessor without built-in printer.

1.2 Rear View
726 Titroprocessor, Short Introduction
22
1.2 Rear View
0
1
A
CC 21
Bar Remote Printer Type 1.726.0010
External Bus
Dos. A1
Dos. A2
Dos. A3
Dos. A4 RS 232 Interface 1
RS 232 Interface 2
Reset
Made by Metrohm Herisau Switzerland
WARNING - Fire Hazard - with the same type and rating of fuse
For continued protection replace only
50-60Hz 160VA
2A(TH)
115V 230V
Dosing Units G
DEF
B
Ind A2 Ind A1 Ref Pol Pt100/1000 Ind B2 Ind B1 Ref Pol Pt100/1000
Sensors A Sensors B
Code
1.3 Where to Connect the Peripherals
Device Interface designation Label
Balances RS232 interface 1 or 2 GG
Indicator electrodes Sensors A or B (Ind A1, Ind A2, ...) CC
Indicator electrodes Sensors A or B (Ref) CC
Temperature sensors Sensors A or B (Pt100/1000) CC
Stirrers Sensors A or B CC
Dosing devices Dosing Units AA
Sample changers External Bus BB
Dosing interface 729 External Bus BB
Printers (Centronics) Printer FF
Printers (serial) RS232 interface 1 or 2 GG
Bar code readers Barcode DD
Personal computers/LIMS RS232 interface 1 or 2 GG
Auxiliary instruments Remote EE
Bar code
connector
Remote socket Printer connector
(parallel interface)
Line connector
Mains switch
External Bus
connector
Dosing
connectors
RS232 Communica-
tion interfaces
Reset
button
Serial
number
Fuse holder
Stirrer Int A
connector
Measurement
group A

11.. OverviewOverview
726 Titroprocessor, Short Introduction 33
1.4 Measuring Interfaces
The 726 Titroprocessor models 2.726.0110 and 2.726.0120 are equipped
with 2 measurement groups (Sensors A and Sensors B).
The drawing below shows where to connect the sensors at the measuring
interface A, which is common to all 726 Titroprocessor models.
1Ind A2 Ind A1 Ref Pol Pt100/1000
Sensors A
Stirrer connector
Int A
Indicator electrode
A2
Indicator electrode
A1
Pt100 or Pt1000
temperature sensor
Reference elec-
trode
Polarized
electrode

1.5 The Keyboard
726 Titroprocessor, Short Introduction
44
1.5 The Keyboard
ENTER
NEXTDELAYSKIP
LINE
FEED
MAN
CONTROL
?
><
|":
+
)
(*
&
^$
#@!
/.,MNBVCXZ
\
,
;
LKJHGFDSA
][POIUY
T
REWQ
=-0987654321
CAPS LOCK
GLP
QUIT PRINT
STOP FORM
PRINT
SCREEN
F1 F2 F3 F4 F5 F6 F7 F8 F9 START
STOP
HOLD
CONT
HELP
INS HOME PG UP
STATUS
DEL END PG DN
METHOD
SAMPLE
RESULT
ALTALT
ON OFF
µ°
The PC-like keyboard allows comfortable editing and data entry in method
development and routine use.
1.5.1 Function Keys (Softkeys)
F1 F2 F3 F4 F5 F6 F7 F8 F9
The blue function keys are used for the navigation within the windows ori-
ented user dialog. The action that will be executed on pressing these func-
tion keys depends on the dialog page or window. The softkey list at the
bottom of the screen always displays the available functions.
1.5.2 Hotkeys
MAN
CONTROL
STATUS
METHOD
SAMPLE
RESULT
The yellow Hotkeys enable direct access to the most important functions or
dialog pages of the 726. Hotkeys may be pressed at any time.
MAN CONTROL -MAN CONTROL - opens the dialog page for manual operation
STATUSSTATUS - displays the basic status info as shown on the main page
METHODMETHOD - opens the method selection window
SAMPLESAMPLE - opens the sample input window
RESULTRESULT - opens a window that shows the short result reports and statistics
1.5.3 Action Keys
NEXTDELAYSKIP
START
STOP
HOLD
CONT
The action keys have an immediate effect on the course of a method. The
<START> key starts a method; the <STOP> key will terminate it. With
<HOLD / CONT> the course of a method may be interrupted or continued.

11.. OverviewOverview
726 Titroprocessor, Short Introduction 55
By simultaneously pressing the <Shift> key and an action key the proc-
essing of a sample series (with autostart 'on') can be controlled directly.
<Shift><START> (=NEXT)<Shift><START> (=NEXT) ends the treatment of the current sample and
starts the same method with the next sample in the series.
<Shift><STOP> (=DELAY)<Shift><STOP> (=DELAY) stops the sample series after the current
sample has been processed.
<Shift><HOLD> (=SKIP)<Shift><HOLD> (=SKIP) ends the execution of the current command
and continues with the next command line of the loaded method.
1.5.4 Manual Printing
LINE
FEED
PRINT
STOP FORM
PRINT
SCREEN
The built-in A4 thermal printer or any connected printer can be manually
controlled via the yellow printing keys.
The <PRINT> keyThe <PRINT> key opens the printer menu, where any report type can be
selected. Global reports and determination reports (if any determination is
present in the working memory) may be selected.
<Shift><PRINT> (= STOP PRINT)<Shift><PRINT> (= STOP PRINT) will stop a printout immediately.
<LINE FEED><LINE FEED> will execute a line feed of the connected printer.
<Shift><LINE FEED> (= FORM FEED)<Shift><LINE FEED> (= FORM FEED) will execute a form feed on the
connected printer.
<PRINT SCREEN><PRINT SCREEN> will print the actual screen contents.
1.5.5 Navigation and Edit Keys
QUIT
INS
HOME
PG UP
DEL END PG DN
The <QUIT> keyThe <QUIT> key closes an edit field, a window or a dialog page and ac-
cepts any parameter changes beforehand. The dialog switches to the next
higher level.
<INS> (=Insert)<INS> (=Insert) switches on or off the insert mode for editing an entry
field.
<DEL> (=Delete)<DEL> (=Delete) deletes the next character to the right of the cursor posi-
tion.
<Shift><DEL><Shift><DEL> clears an entire edit field.
<HOME><HOME> places the cursor into the first edit field of a dialog window (in
navigation mode).
<END><END> places the cursor into the last sample silo line or command line (in
method editor).
<PG UP><PG UP> moves the field cursor up in the sample silo or the method editor
by one page.
<PG DN><PG DN> moves the field cursor down in the sample silo or the method
editor by one page.
<Cursor up><Cursor up> moves the cursor up by one line.
<Cursor down><Cursor down> moves the cursor down by one line.

1.5 The Keyboard
726 Titroprocessor, Short Introduction
66
<Cursor left><Cursor left> moves the cursor to the left by one field (in navigation mode)
or by one character (in edit mode).
<Cursor right><Cursor right> moves the cursor to the right by one field (in navigation
mode) or by one character (in edit mode).
1.5.6 HELP Key
HELP
The <HELP> key<HELP> key opens a page with help text referring to the opened dia-
log page or window. In edit mode it opens the help window for the parame-
ter entry.

22.. InstallationInstallation
726 Titroprocessor, Short Introduction 77
2 Installation
2.1 Connections
Some recommendations for the connection with Sample Changers and ad-
ditional dosing devices:
Sample Changers and additional Dosimats are connected via the External
Bus Interface.
Before plugging in an external device or changing an EBus address, switch
off the instrument.
2.1.1 External Bus
The External Bus enables external devices to be controlled by a master in-
strument. Sample changers and dosing devices such as the 685 Dosimat or
the 700 Dosino can communicate bi-directionally with the master instru-
ment.
External devices must be connected by EBus cables. The cables are to be
chained like this:
Bus Master extern. Device extern. Device
External Bus
Each external device is identified by an EBus address. The different devices
are identified automatically. For each device, the EBus address must be set
(1…9,A…F; 0 stands for the bus master device).
Address selector
Use a screw driver to set the appropriate EBus
address. You find the EBus address selector on
the rear panel of each device.
Device EBus
address
Peripherals
Sample Changer 1 11…2 Lifts, 0…4 Pumps,
1…4 Stirrers
Sample Changer 2 21…2 Lifts, 0…4 Pumps,
1…4 Stirrers
Dosimat Interface 1 11…4 Dosimats (B1…B4)
Dosimat Interface 2 21…4 Dosimats (C1…C4)

2.1 Connections
726 Titroprocessor, Short Introduction
88
Connect the power consuming devices, such as Sample Changers, first in
the EBus cable chain. This is especially important if the Sample Changer is
equipped with more than one pump. The 729 Dosimat Interfaces may be
plugged in to the Sample Changer.
The 726 Titroprocessor and the Dosimat Interfaces need to be connected to
the same ground. Use a line distributor for the power supply of all the in-
struments.
Switch off the 726 Titroprocessor before plugging in any
peripheral device.
2.1.2 Connecting Scheme
700685
Dosimat B2
Dosimat B1
729
Dosimat B3
Dosimat B4
EBus
Address 1
EBus
Address 2
External Bus
EBus
Address 1
717 717
700685
Dosimat C2
Dosimat C1
729
Dosimat C3
Dosimat C4
EBus
Address 2
700685
Dosimat A2
Dosimat A1
700685
Dosimat A4
Dosimat A3
Line distributor
726
Dosing
devices
Power cables

22.. InstallationInstallation
726 Titroprocessor, Short Introduction 99
2.2 Safety Considerations
If failure or malfunctioning occurs during operation of the 726 Titroproces-
sor, it is recommended to first search for the cause with the help of the di-
agnostic functions. If this is of no help in rectifying the disorder or the cause
of the malfunction cannot be identified, the Metrohm Service Department
should be consulted.
If the instrument is has to be opened, the following safety precautions are to
be strictly adhered to:
Before opening the instrument disconnect it from all electrical sources.
Make sure that the power plug has been pulled out.
Only in exceptional cases should the instrument be opened while it is
switched on. Because parts that conduct current are exposed in this case,
this should only be undertaken by an expert who is acquainted with the as-
sociated dangers.
Electronic components are sensitive to static electricity and can be de-
stroyed by discharge. Before touching any components inside the instru-
ment, both the person and his tools should be grounded by grasping a
grounded object (for example: the casing of the instrument or a radiator) in
order to eliminate any static electricity.
If it becomes apparent that the instrument can no longer be operated safely,
it must be put out of operation.

3.1 Determinations and Titrations
726 Titroprocessor, Short Introduction
1010
3 Concepts
3.1 Determinations and Titrations
Unlike other Metrohm instruments, the 726 Titroprocessor offers the ability
to include up to five titration or measuring modes in one method.
One method defines a determination to be done with one sample. This de-
termination may include multiple titrations or measurements. Each one of
these modes may include separate calculation formulas and report defini-
tions. Each mode produces its own data sets (measuring point list), which is
the origin for any report to be printed or sent to an external device such as a
PC or a LIMS.
Methods and determinations can be stored in separate files, either on a
data card or in the internal storage of the 726.
Sample èDetermination èDetermination data èReports èFile
Measurement
Titration
Titration
Measurement
Titration
Measuring point list
Measuring point list
Measuring point list
Measuring point list
Measuring point list
Curve(s), Result(s)…
Curve(s), Result(s)…
Curve(s), Result(s)…
Curve(s), Result(s)…
Curve(s), Result(s)…
Meas. data
Titration data
Titration data
Meas. data
Titration data
Determinations can be reloaded and modified. Recognition and display set-
tings can be changed. All formulas can be modified and recalculated. Even
a re-evaluation of the endpoints is possible. A new set of reports may be
defined and printed.
Common variables that have been valid at determination time are stored
with the determination data and may be used for recalculations as tempo-
rary common variables. Recalculations do not have an effect on the global
common variables.
Multiple (but similar) titration and measuring curves may be compared by
overlaying.

33.. ConceptsConcepts
726 Titroprocessor, Short Introduction 1111
3.2 Data Storages and Statistics
Methods, sample silos, configuration files and determination data can be
stored on a data card or in the internal storage.
Determination data may be saved automatically with the auto save function
(see MAIN PAGE, Auto save, Destination). File names and comments will be
assigned automatically. The type of file name assignment can be modified
on the configuration page.
Configure the 'File name type' for your needs. Choose a combination of
date, run number, sample identification or standard file name. The standard
file name is a text string that you can edit under 'Standard data file name'.
The assignment of file comments may be customized in the same manner.
Determination data files are built into the working memory. The number of
data files that will be held in the working memory depends on the statistics
settings.
With statistics 'off', one single data file (the current determination) will be
held in the working memory.
With statistics 'on', as many files as indicated by the number of the statistics
definition will be held in the working memory.
To reset/clear the working memory, you have to reset the statistics (MAIN
PAGE / Statistics 'rst' <ENTER>).
When the statistics counter has reached its limit, the working memory will be
cleared with the beginning of the next determination.
It is a good idea to always use the auto save function and store determina-
tion data in the internal storage or on a data card. If you want to copy, delete
or move any files, use the file manager, which supports comfortable file op-
erations.
The 726 Titroprocessor is shipped with a 128 KB SRAM data card. Any
PCMCIA card (< 2 MB capacity) may be used as well. The file system of the
726 allows to store 256 files per storage location (except the working mem-
ory).
Although the internal storage and the working memory are separated, they
share the same 1.2 MB of user memory. It is recommended to store meth-
ods in the internal storage and save your determination data frequently on a
data card.

4.1 Dialog Overview
726 Titroprocessor, Short Introduction
1212
4 How to Navigate
4.1 Dialog Overview
The user dialog of the 726 Titroprocessor consists of 10 main pages, which
contain hierarchically structured subwindows.
Main
page
Configuration
page
Files
page
Method
page
Curves
page
Results
page
Samples
page
Devices
page
Variables
page
Sub-
window
Sub-
window
Sub-
window
Sub-
window
Sub-
window
sub-
window
Sub-
window
Sub-
window
Sub-
window
Load
method
The monitoring page is the main page of the user dialog. All other pages
can be accessed by using the corresponding softkeys (F1 to F9).
4.2 The Softkeys
ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
³ 96-03-12 09:16:01 MAIN PAGE 726 Titroprocessor * ready * ³
³ ³
³ Method name Chloride.mth Determination of chloride ³
³ ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ ³
³ ³
³ ÚÄÄÄÄÄÄÄÄÄÄ Application Note ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿³
³ User D. A. User ³ ³³
³ Run 001 ³ ³³
³ Statistics off 0 of 2 ³ ³³
³ ³ ³³
³ Auto save off 92.2 % free ³ ³³
³ Destination Internal ³ ³³
³ Determ.name DATA01.dtm ³ ³³
³ ³ ³³
³ Auto start off 0 of 9999 ³ ³³
³ Silo off in# 1 out# 1 ³ ³³
³ Changer 1 Sample pos. 1 ³ ³³
³ ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ³
³ ³
³ Ident1 Ident2 Ident3 Size Unit ³
³ Sample ³
³ ³
³ Remark ³
³ ³
³ ÚÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄ¿ ÚÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄ¿ ÚÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄ¿ ³
³ ³Config.³Load ³File ³ ³Edit ³Show ³Results³ ³Sample ³Devices³Common ³ ³
³ ³ ³method ³manager³ ³method ³Curves ³ ³ ³Silo ³ManCtrl³vars ³ ³
³ ÀÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÙ ÀÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÙ ÀÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÙ ³
ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ
F1 F2 F3 F4 F5 F6 F7 F8
F9
To navigate from page to page or from subwindow to subwindow you can
use the blue function keys F1 to F9. These function keys alter their meaning
or functionality, depending on the dialog page or window that is shown on

44.. How to NavigateHow to Navigate
726 Titroprocessor, Short Introduction 1313
the screen. The function of the corresponding function key is always shown
at the bottom of the screen. It is called the softkey bar. The function keys
(F1 to F9) are called softkeys.
A dialog page or window can be left or closed by pressing the <QUIT>
key. Any prior modifications of parameters will be accepted.
The shortcut keys of the rightmost key column on the keyboard allow direct
access to some important dialog windows or features.
4.3 Field Cursor
To navigate on a page or in a dialog window you can use the cursor keys
<ç>, <è>, <é> or <ê>. The position of the so called field cursor is
indicated by the black field background of the edit field the cursor is point-
ing to. To navigate right or left within a line you can use the <TAB> key or
the <Shift><TAB> key combination, respectively. The <HOME> key sets
the field cursor to the first edit field of a page or dialog window.

5.1 Navigation in Edit Mode
726 Titroprocessor, Short Introduction
1414
5 How to Edit
To edit an entry of an edit field just type in the new value or press the
<SPACE> key. In most cases a picklist is shown, from which you can se-
lect a given value by using the cursor keys <ê> and <é>. The selection
must be confirmed with <ENTER> or the picklist may be closed by press-
ing the <QUIT> key. The field cursor will turn into a block cursor which in-
dicates the edit mode.
The PC-like keyboard allows comfortable editing of text or numeric entries.
To erase any character use the <DELETE> (forward deletion) or the
<BACKSPACE> key (backward deletion). The <INSERT> key switches the
insert mode to the overwrite mode and vice versa.
In this mode a special softkey bar is shown.
The [Help] softkey may be used to open a window with a short explanation
of the meaning or the content of the entry field to be edited. The entry range
and one or more examples for entry values will be shown.
The [Select] softkey opens the picklist of the selected entry field. If no pick-
list is available, the [Select] softkey is displayed in gray letters to indicate
that its function is not available.
The [Cancel] softkey rejects any modifications and resets the former field
content. The edit mode will be canceled as well.
Modifications of field contents are to be confirmed with the <ENTER> or
the <QUIT> key. The latter will terminate the edit mode.
5.1 Navigation in Edit Mode
In edit mode the cursor keys <ç> and <è> allow the navigation within
an entry field. To access other fields in the same line use the <TAB> key or
the <Shift><TAB> key combination, respectively. The cursor keys <ê>
and <é> allow vertical navigation.

66.. ConfigurationConfiguration
726 Titroprocessor, Short Introduction 1515
6 Configuration
6.1 Basic Configuration
The basic configuration is accessible from the main page by pressing the
[Config.] softkey.
Items to be configured:
Dialog in not yet implemented in 5.726.0010 program version
(German, French and Spanish in 5.726.0011 pro-
gram version )
Date and Time system date and time
LCD contrast screen brightness
Screen save delay time for screen switch-off
Error beep acoustic error warning on/off
Edit beep acoustic editor warning on/off
Edit mode switches overwrite/insert mode
Data file options:
Each determination is automatically given a data file name. This file name
can be set up in different ways, combining determination time, run number
and/or a certain standard text that can be defined.
Standard data file name standard text (up to 5 or 8 characters resp.)
File name type combination type for file name
File comment type combination type for file comment
The device header that will be printed with every report can be edited after
pressing the [Device header] softkey.
For information on the configuration of dialog restrictions (softkey [Access
control] see page XX.
Interface configuration
Two serial RS232 interfaces can be used for connecting external printers,
balances or computers/LIMS (or other peripheral devices). The interface
parameters are separated in two columns for interface 1 (Ifc.1) and interface
2 (Ifc.2). Always ensure that the interface settings correspond with those of
the connected devices.
Interface parameters:
Baud rate transmission rate
Data bit number of data bits used
Stop bit number of stop bits used
Parity type of parity checking
Handshake type of handshake

6.1 Basic Configuration
726 Titroprocessor, Short Introduction
1616
Receive mode switches on/off the reception of transmitted data
Type of connected instruments:
Balance type or manufacturer of the connected balance
Printer emulation of printer type
try HP Deskjet for any inkjet or laser printer
(with RS232 interface)
try Epson or IBM Proprinter for dot matrix printers
(with RS232 interface)
Data communication settings
The 726 Titroprocessor may communicate with a personal computer or a
LIMS system via the RS232 interfaces. The settings are:
Communication Int. RS232 interface used for the connection
Commun. mode Mode of data communication:
keyCTRL (=remote control using key code
simulation)
keySEND (=send codes of keys pressed to a PC)
LIMS (=data output to a PC or LIMS system
e.g. for raw data report to a LIMS)
off no data communication
Centronics printer port (726 model without built-in printer)
It is recommended to connect a printer to the parallel printer port rather than
to any RS232 interface (see your printer manual).
Printer emulation of printer type
try HP Deskjet for any inkjet or laser printer
try Epson or IBM Proprinter for dot matrix printers
Internal printer settings (726 models with built-in thermal printer)
The built-in printer may be used besides an external printer (RS232 inter-
face).
Internal printer switch on/off the internal printer
Auto form feed switch on/off automatic paper feed after report
printing (with original Metrohm 6.2237.040 thermal
paper only)
The softkeys [Reset RS232 1] and [Reset RS232 2] will reset the input and
output buffers of the RS232 interfaces.